ATECC608A datasheet(30/81 Pages) MICROCHIP

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Table 5-7. Input Parameters - Info Device State

Opcode

(1 Byte)

Mode

(1 Byte)

Param

(2 Bytes)

Data

(0 Bytes)

Description

0x30

0x02

0x00 00

—

Returns device state

Table 5-8. Output Response - Info Device State

Name

Response

Description

Response

0x00 00 Byte[1] Byte[0]

Table 5-9. Status Flags

Byte #

Bit #

Name

Description

TempKey.NoMacFlag

0: NoMacFlag is invalid

1: NoMacFlag is valid

TempKey.GenKeyData

0: GenKeyData is invalid

1: GenKeyData is valid

TempKey.GenDigData

0: GenDigData is invalid

1: GenDigData is valid

TempKey.SourceFlag

0: TempKey is fixed source

1: Temp Key is from random source

3:0

TempKey.KeyID

TempKey Key SlotID

TempKey.Valid

0: TempKey is not valid

1: TempKey is valid

6:3

AuthComplete.KeyID

Authorization Key SlotID

AuthComplete.Valid

0: Authorization invalid

1: Authrorization valid

1:0

Unused

2’b00

5.1.3

Lock Command

For the ATECC608A-TNGLoRaWAN, the Configuration zone has already been locked and the access policies of the

Data zone have already been enforced. However, several of the data slots can still be updated through the use of

other commands. If so desired, some of these slots can be permanently locked from future updates by using the Slot

Locking mode of the Lock command.

5.1.3.1

SlotLock

The Slot Lock mode of the Lock command is used to individually lock slots. Any slot that has the Lockable bit set and

has not previously been slot-locked can be locked to prevent any further updates. This process is not reversible.

Once a slot has been locked, it is permanently locked. In this mode of operation, the Summary CRC and Data fields

are ignored.

For the ATECC608A-TNGLoRaWAN, the following individual slots may be locked: Slots 8, 10 and 14.

Table 5-10. SlotLock Input Parameters

Opcode

(1 Byte)

Mode(1 Byte)

Summary CRC

(2 Bytes)

Data

(0 Bytes)

Description

0x17

8’b00[bb_bb]10(1)

0x00 00

—

Individual Slot Lock

ATECC608A-TNGLoRaWAN

Device Commands

Complete Datasheet

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